The probability that event occurs is and the probability that event Boccurs is If A and 13 are independent events, what is the probability that A and B both occur?

step-by-step explanation: 4 cause 2+2=4

what graph

step-by-step explanation:

the first one

step-by-step explanation:

just id the test.

the answer is: d) o, f, and kr.

atomic radius of bromine (br) is 114 pm.

atomic radius of oxygen (o) is 73 pm.

atomic radius of fluorine (f) is 72 pm.

atomic radius of krypron (kr) is 112 pm.

the atomic radius of a chemical element is a measure of the size of its atom.

the atomic radius varies with increasing atomic number, but usually increases because of increasing of number of electrons.

the atomic radius decreases across the periods because an increasing number of protons, because greater attraction between the protons and electrons.